workflow for github actions to check translation formats

.github/workflows/check_translation_format.yml

@@ -0,0 +1,42 @@
+name: Check format
+on:
+  pull_request:
+    branches: 
+    - master 
+    - develop
+jobs:
+  check_translation:
+    name: Check format
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup python3
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.6
+    - name: Run check_translation for pull_request
+      run: |
+        import os
+        import subprocess
+        import re
+        errors_encounter = 0
+        pattern = re.compile(r"_\(([\"']{,3})(?P<message>((?!\1).)*)\1(\s*,\s*context\s*=\s*([\"'])(?P<py_context>((?!\5).)*)\5)*(\s*,\s*(.)*?\s*(,\s*([\"'])(?P<js_context>((?!\11).)*)\11)*)*\)")
+        temp = re.compile(r"_\(([\"']{,3})")
+        subprocess.run('git fetch origin '+os.environ['GITHUB_BASE_REF']+ ' :' +os.environ['GITHUB_BASE_REF']+ ' -q', shell=True)
+        files = subprocess.check_output('git diff --name-only '+os.environ['GITHUB_BASE_REF'], shell=True)
+        files = files.decode('utf-8')
+        files = files.split()
+        for file in files:
+          with open(file, 'r') as f:
+            for num, line in enumerate(f, 1):
+              all_matches = temp.finditer(line)
+              if all_matches:
+                for match in all_matches:
+                  verify = pattern.search(line)
+                  if not verify:
+                    errors_encounter += 1
+                    print(num)
+                    print(line)
+        if errors_encounter > 0 :
+          assert 1+1 == 3
+      shell: python